Document And Entity Information Abstract Document Type Document Annual Report Document Period End Date Document Transition Report Entity File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company ICFR Auditor Attestation Flag Auditor Name Auditor Firm ID Auditor Location Entity Shell Company Entity Public Float Entity Common Stock Shares Outstanding Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag Statement Of Financial Position [Abstract] Assets [Abstract] ASSETS Assets Current [Abstract] Current assets Cash And Cash Equivalents At Carrying Value Cash and cash equivalents Accounts Receivable, Net, Current Accounts receivable, net of allowance for doubtful accounts of $17.4 million and $17.5 million, respectively Inventory, Net Inventories Prepaid Taxes Prepaid income taxes Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Assets Current Total current assets Equity Method Investments Investments in unconsolidated affiliates Property Plant And Equipment Net Property and equipment, net Property and equipment, net Operating Lease, Right-of-Use Asset Operating lease assets Operating lease assets Other Assets Noncurrent Other assets, net Other Intangible Assets, Net Other intangibles, net Deferred Income Tax Assets, Net Deferred income tax assets, net Amount of finite lived trademarks, net of accumulated amortization and impairment charges. Finite Lived Trademarks Net Trademarks Goodwill Goodwill, Ending Balance Goodwill, Beginning Balance Goodwill Goodwill Assets Total assets Total assets Liabilities And Stockholders Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities Current [Abstract] Current liabilities Notes Payable, Current Current portion of notes payable Accounts Payable Current Accounts payable Accrued Liabilities, Current Accrued expenses Total Customer Refund Liability, Current Customer refund liabilities Customer refund liabilities Operating Lease, Liability, Current Current operating lease liabilities Current operating lease liabilities Taxes Payable, Current Income tax payable Other Liabilities, Current Other current liabilities Liabilities Current Total current liabilities Notes Payable, Noncurrent Notes payable, net of discount and unamortized issuance costs Deferred Income Tax Liabilities, Net Deferred income tax liabilities, net Operating Lease, Liability, Noncurrent Noncurrent operating lease liabilities Other Liabilities Noncurrent Other noncurrent liabilities Liabilities Total liabilities Redeemable Noncontrolling Interest, Equity, Carrying Amount Redeemable noncontrolling interests Stockholders' Equity Stockholders' Equity Preferred Stock Value Preferred stock; 1,000 shares authorized; no shares issued Common Stock Value Common stock - $0.01 par value; 120,000 shares authorized; 49,396 and, 49,396 shares issued, respectively Additional Paid In Capital Common Stock Additional paid-in capital Accumulated Other Comprehensive Income Loss Net Of Tax Accumulated other comprehensive loss Retained Earnings (Accumulated Deficit) Retained earnings Treasury Stock Value Common stock held in treasury, at cost - 1,480 and 1,019 shares, respectively Stockholders' Equity Attributable to Parent Balance at end of period Balance at beginning of period Total stockholders' equity Cumulative effect of adoption of ASC Liabilities And Stockholders Equity Total liabilities, redeemable noncontrolling interests and stockholders' equity Allowance For Doubtful Accounts Receivable Current Allowance for doubtful accounts, accrued returns and sales discounts on accounts receivable (in dollars) Preferred Stock Shares Authorized Preferred stock, shares authorized Preferred Stock Shares Issued Preferred stock, shares issued Preferred Stock Shares Outstanding Preferred stock, shares outstanding Common Stock Par Or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Treasury Stock Shares Treasury stock, shares Income Statement [Abstract] Revenue from Contract with Customer, Including Assessed Tax Net sales Revenues Cost of Goods and Services Sold Cost of goods sold Gross Profit Gross profit Selling, General and Administrative Expense Selling, general and administrative expenses Selling, general and administrative expenses Depreciation And Amortization Depreciation and amortization Asset Impairment Charges Asset impairments Asset impairments, net of loss (gain) on lease terminations Operating Income Loss Operating profit (loss) Other Nonoperating Income (Expense) Other income (loss) Financing Interest Expense Interest and financing charges, net Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest, Total Income (loss) before income taxes Income Tax Expense (Benefit) Income tax expense (benefit) Income tax expense Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income (loss) Net income (loss) Net Income (Loss) Attributable to Noncontrolling Interest Less: Income attributable to noncontrolling interests Net Income (Loss) Attributable to Parent Net income (loss) Net income attributable to G-III Apparel Group, Ltd. Net income (loss) attributable to G-III Apparel Group, Ltd. Net Income (Loss) per Common Share NET INCOME PER COMMON SHARE: Basic net income per share: Basic net income (loss) per share: Basic: Earnings Per Share, Basic Net income (loss) per common share Net income (loss) per common share (in dollar per shares) Weighted Average Number Of Shares Outstanding Basic Basic common shares Weighted average number of shares outstanding (in shares) Earnings Per Share Diluted [Abstract] Diluted net income (loss) per share: Diluted: Earnings Per Share, Diluted Net income per common share Diluted net income (loss) per share (in dollars per share) Weighted Average Number Of Diluted Shares Outstanding Weighted average number of shares outstanding (in shares) Diluted common shares Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income: Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Foreign currency translation adjustments Other Comprehensive Income Loss Net Of Tax Other comprehensive loss Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest [Abstract] Reclassification of income attributable to redeemable noncontrolling interest Reclassification of income attributable to redeemable noncontrolling interest Net loss Reclassification of oci attributable to redeemable noncontrolling interest Reclassification of oci attributable to redeemable noncontrolling interest Foreign currency translation adjustments Reclassifications to temporary equity Reclassifications to temporary equity Comprehensive income attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income attributable to G-III Apparel Group, Ltd Statement Of Stockholders Equity [Abstract] Statement [Table] Equity Components [Axis] Equity Component [Domain] Parent [Member] Common Stock Additional Paid-in Capital Accumulated Other Comprehensive Loss Retained Earnings Common Stock Held in Treasury Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] ASC 606 Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption, Adjustment Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Stock Issued During Period Value Share Based Compensation Gross Equity awards exercised/vested, net Adjustments To Additional Paid In Capital Share based Compensation Requisite Service Period Recognition Value Share-based compensation expense Adjustments Related to Tax Withholding for Share-based Compensation Taxes paid for net share settlements Other Comprehensive Income Loss, net of foreign exchange impact Other Comprehensive Income Loss, net of foreign exchange impact Other comprehensive income (loss), net Stock Repurchased During Period, Value Repurchases of common stock Statement Of Cash Flows [Abstract] Cash flows from operating activities Cash flows from operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash used in operating activities: Gain (Loss) on Disposition of Property Plant Equipment Loss on disposal of fixed assets Amount of increase (decrease) in right of use asset under operating lease agreement. Increase (Decrease) in Operating lease Asset Non-cash operating lease costs Gain (loss) from lease agreement modifications. Gain Loss From Lease Agreement Modifications Loss (gain) on lease terminations Asset impairments Asset impairments Asset impairments Dividend received from unconsolidated affiliate Dividend received from unconsolidated affiliate Dividend received from unconsolidated affiliate Venture Capital Gain (Loss), Net Equity (gain) loss in unconsolidated affiliates Change in fair value of equity investment Change in fair value of equity investment Change in fair value of equity investment Share-based Compensation Share-based compensation Amortization of Debt Issuance Costs and Discounts Deferred financing charges and debt discount amortization Gain (Loss) on Extinguishment of Debt Extinguishment of deferred financing costs Deferred Income Tax Expense Benefit Deferred income taxes Other Nonoperating Income Non-cash gains recorded in conjunction with Fabco acquisition Increase Decrease In Operating Capital [Abstract] Changes in operating assets and liabilities: Increase Decrease In Accounts Receivable Accounts receivable, net Increase Decrease In Inventories Inventories Increase Decrease In Income Taxes Income taxes, net Increase Decrease In Prepaid Deferred Expense And Other Assets Prepaid expenses and other current assets Increase Decrease In Other Noncurrent Assets Other assets, net Represents the amount of increase decrease in refund liabilities. Increase Decrease In Refund Liability Customer refund liabilities Increase (Decrease) in Operating Lease Liability Operating lease liabilities Increase Decrease In Accounts Payable And Accrued Liabilities Accounts payable, accrued expenses and other liabilities Net Cash Provided by (Used in) Operating Activities, Total Net cash provided by operating activities Cash flows from investing activities Cash flows from investing activities Payments for (Proceeds from) Other Investing Activities Operating lease assets initial direct costs Payments to Acquire Interest in Subsidiaries and Affiliates, Total Minority investment in e-commerce retailer Equity issued in joint venture Proceeds from Divestiture of Interest in Subsidiaries and Affiliates Sale of portion of investment in e-commerce retailer Payments to Acquire Productive Assets, Total Capital expenditures Payments To Acquire Businesses Net Of Cash Acquired Investment in brand acquisition Net Cash Provided by (Used in) Investing Activities, Total Net cash used in investing activities Cash flows from financing activities Cash flows from financing activities Repayments of Lines of Credit Repayment of borrowings - revolving facility Proceeds from Lines of Credit Proceeds from borrowings - revolving facility Repayments of Unsecured Debt Repayment of borrowings - unsecured term loan Proceeds from Issuance of Unsecured Debt Proceeds from borrowings - unsecured term loan Proceeds from Issuance of Senior Long-term Debt Proceeds from borrowings - senior secured notes Payments of Financing Costs Payment of financing costs Repayments of Assumed Debt Repayment of loan from acquired brand Proceeds from Stock Options Exercised Proceeds from exercise of equity awards Payments for Repurchase of Common Stock Purchase of treasury shares Aggregate purchase price Payments Related to Tax Withholding for Share-based Compensation Taxes paid for net share settlements Net Cash Provided by (Used in) Financing Activities, Total Net cash provided by (used in) financing activities Effect Of Exchange Rate On Cash And Cash Equivalents Foreign currency translation adjustments Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net increase in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Supplemental Cash Flow Information [Abstract] Supplemental disclosures of cash flow information: Cash paid during the period for: Cash Paid During Period For [Abstract] Cash payments: Interest Paid, Excluding Capitalized Interest, Operating Activities Interest, net Income Taxes Paid Net Income tax payments, net Other Significant Noncash Transaction, Value of Consideration Received Stock received from licensing agreement Basis of Presentation [Abstract]